Well title says all
In my case it would be, the PS1 Fearful Harmony noise that appears before that strange bell sound. Even if I listened to it on YouTube (I never had a PS1 lol), that gives me chills. The bells are also creepy but not like the Fearful Harmony
That happens on the console when you insert an scratched/invalid disc.
Also, in a TV channel on my country, there was a contest program every Sunday at 9:00pm that used to end at 10pm. The room of the contest had an alarm to announce that the time happened and it always scared me in the past.